docker/0004-bsc1073877-apparmor-clobber-docker-default-profile-o.patch

From bc52d15141402d94eeaee618f1df0b540f527b98 Mon Sep 17 00:00:00 2001
From: Aleksa Sarai <asarai@suse.de>
Date: Fri, 29 Jun 2018 17:59:30 +1000
Subject: [PATCH 4/7] bsc1073877: apparmor: clobber docker-default profile on
 start

In the process of making docker-default reloading far less expensive,
567ef8e7858c ("daemon: switch to 'ensure' workflow for AppArmor
profiles") mistakenly made the initial profile load at dockerd start-up
lazy. As a result, if you have a running Docker daemon and upgrade it to
a new one with an updated AppArmor profile the new profile will not take
effect (because the old one is still loaded). The fix for this is quite
trivial, and just requires us to clobber the profile on start-up.

Fixes: 567ef8e7858c ("daemon: switch to 'ensure' workflow for AppArmor profiles")
SUSE-Bugs: bsc#1099277
Signed-off-by: Aleksa Sarai <asarai@suse.de>
---
 daemon/apparmor_default.go             | 14 ++++++++++----
 daemon/apparmor_default_unsupported.go |  4 ++++
 daemon/daemon.go                       |  5 +++--
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/daemon/apparmor_default.go b/daemon/apparmor_default.go
index 21813ec14f8f..0de75b32b7fa 100644
--- a/daemon/apparmor_default.go
+++ b/daemon/apparmor_default.go
@@ -24,6 +24,15 @@ func DefaultApparmorProfile() string {
 	return ""
 }
 
+func clobberDefaultAppArmorProfile() error {
+	if apparmor.IsEnabled() {
+		if err := aaprofile.InstallDefault(defaultAppArmorProfile); err != nil {
+			return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded: %s", defaultAppArmorProfile, err)
+		}
+	}
+	return nil
+}
+
 func ensureDefaultAppArmorProfile() error {
 	if apparmor.IsEnabled() {
 		loaded, err := aaprofile.IsLoaded(defaultAppArmorProfile)
@@ -37,10 +46,7 @@ func ensureDefaultAppArmorProfile() error {
 		}
 
 		// Load the profile.
-		if err := aaprofile.InstallDefault(defaultAppArmorProfile); err != nil {
-			return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded: %s", defaultAppArmorProfile, err)
-		}
+		return clobberDefaultAppArmorProfile()
 	}
-
 	return nil
 }
diff --git a/daemon/apparmor_default_unsupported.go b/daemon/apparmor_default_unsupported.go
index e3dc18b32b5e..9c7723056268 100644
--- a/daemon/apparmor_default_unsupported.go
+++ b/daemon/apparmor_default_unsupported.go
@@ -3,6 +3,10 @@
 
 package daemon // import "github.com/docker/docker/daemon"
 
+func clobberDefaultAppArmorProfile() error {
+	return nil
+}
+
 func ensureDefaultAppArmorProfile() error {
 	return nil
 }
diff --git a/daemon/daemon.go b/daemon/daemon.go
index f15a4b038498..2f0c23bc62c9 100644
--- a/daemon/daemon.go
+++ b/daemon/daemon.go
@@ -857,8 +857,9 @@ func NewDaemon(ctx context.Context, config *config.Config, pluginStore *plugin.S
 		logrus.Warnf("Failed to configure golang's threads limit: %v", err)
 	}
 
-	// ensureDefaultAppArmorProfile does nothing if apparmor is disabled
-	if err := ensureDefaultAppArmorProfile(); err != nil {
+	// Make sure we clobber any pre-existing docker-default profile to ensure
+	// that upgrades to the profile actually work smoothly.
+	if err := clobberDefaultAppArmorProfile(); err != nil {
 		logrus.Errorf(err.Error())
 	}
 
-- 
2.38.1